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Texas Instruments INA186A5IDCKR
- Part No.:
- INA186A5IDCKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 6-TSSOP, SC-88, SOT-363
- Datasheet:
-
INA186A5IDCKR.pdf
- Description:
- IC CURR SENSE 1 CIRCUIT SC70-6
- Quantity:
- Payment:
- Shipping:
Inventory:9,309
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Product details
Overview
INA186A5IDCKR from Texas Instruments is a bidirectional, zero-drift current-sense amplifier with 500 V/V fixed gain, –0.2 V to +40 V common-mode input range, ±50 µV max offset voltage, and 48 µA typical quiescent current. It enables precision microamp-level current measurement in battery-powered portable electronics using SC70-6 packaging.
For engineers reviewing the INA186A5IDCKR datasheet, INA186A5IDCKR pinout, INA186A5IDCKR application, or INA186A5IDCKR equivalent, this page delivers verified specifications, SC70 package terminal mapping, bidirectional sensing capability with REF pin support, and real-world selection guidance for low-power, high-accuracy current monitoring designs.
Technical Context
The INA186A5IDCKR uses a capacitively coupled front-end architecture to achieve 120 dB minimum CMRR and reject dc common-mode shifts up to ±40 V independent of its 1.7–5.5 V supply. Its zero-drift topology maintains ±0.5 µV/°C max offset drift and ±1% max gain error across –40°C to +125°C.
This SC70-6 variant includes both REF and ENABLE pins-enabling bidirectional current sensing via external reference biasing and ultra-low-power shutdown (10 nA IQDIS). Input bias current is limited to 0.5 nA typ, permitting use of high-value shunt resistors for sub-microamp measurement resolution.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain | 500 V/V - sets full-scale output at 1 mV input differential, enabling high-resolution sensing with low-power-loss shunts |
| Common-mode range | –0.2 V to +40 V - supports high-side sensing on 36-V rails while powered from 1.8-V logic supply |
| Offset voltage | ±50 µV max - ensures <0.1% error at 50-mA load with 10-mΩ shunt, critical for light-load accuracy |
| Quiescent current | 48 µA typ - extends battery life in always-on monitoring circuits; drops to 10 nA when ENABLE = GND |
| CMRR | 120 dB min - suppresses bus-voltage ripple and noise coupling in noisy power domains |
| Bandwidth | 27 kHz - sufficient for DC–10 kHz current transients in charger, PSU, and BBU applications |
| Input bias current | 0.5 nA typ - allows >100-kΩ RC filters without gain/offset degradation, improving EMI immunity |
Pinout & Package
INA186A5IDCKR is housed in a 6-pin SC70 package (2.00 mm × 1.25 mm), optimized for space-constrained portable PCBs. All pins are surface-mount compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: REF | Analog reference input | Enables bidirectional sensing; applying mid-supply voltage centers output for ±current flow detection |
| 2: GND | Analog ground return | Low-impedance reference for internal amplifiers; must be connected to clean system ground plane |
| 3: VS | Power supply input | Accepts 1.7–5.5 V; powers internal amplifiers and bias circuitry; bypass with 0.1 µF ceramic capacitor |
| 4: IN+ | Positive current-sense input | Connects to bus/high-side of shunt; tolerates –0.2 V to +40 V common-mode regardless of VS |
| 5: IN– | Negative current-sense input | Connects to load/low-side of shunt; differential voltage (IN+ − IN–) is amplified by 500× and offset by REF |
| 6: OUT | Analog voltage output | Delivers rail-to-rail output (GND + 1 mV to VS – 40 mV); drives 10-kΩ loads directly without buffering |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional sensing with REF pin | Supports ±current detection in battery charge/discharge cycles by centering output at user-defined VREF |
| Zero-drift architecture | Maintains ±50 µV max offset and 0.5 µV/°C max drift over temperature-critical for long-term calibration stability |
| Ultra-low input bias current | 0.5 nA typ enables >1-MΩ input filtering without measurement error-ideal for EMI-prone PSU environments |
| Enable-controlled shutdown | Reduces supply current to 10 nA when ENABLE = GND; eliminates standby power loss in intermittent-monitoring systems |
| Rail-to-rail output swing | Output reaches within 1 mV of GND and 40 mV of VS-maximizes dynamic range on 1.8-V supplies |
Applications
| Smartphone Battery Management | USB-C PD Charger Monitoring |
|---|---|
Use Scenario: Real-time charging/discharging current tracking during fast-charge cycles and system sleep states. IC Role / Device Role / Timing Role: Current-sense amplifier measuring mΩ-shunt voltage drop; provides analog feedback to PMIC or MCU ADC. Use Value: 500 V/V gain resolves 2-µA current steps with 10-mΩ shunt; 48 µA IQ minimizes impact on battery runtime. |
Use Scenario: Accurate input/output current monitoring in multi-port USB-C PD adapters with variable 5–20 V output rails. IC Role / Device Role / Timing Role: High-side current monitor on primary and secondary sides; interfaces with isolated digital controller via analog feedback path. Use Value: –0.2 V to +40 V common-mode range accommodates 20-V PD output while powered from 3.3-V auxiliary supply. |
| Baseband Unit (BBU) Power Rail Sensing | Consumer Wireless Earbud Charging Case |
Use Scenario: Per-rail current supervision in 4G/5G remote radio units where thermal headroom limits shunt power dissipation. IC Role / Device Role / Timing Role: Precision current shunt monitor on 12-V and 48-V distribution rails; feeds telemetry to FPGA or BMC. Use Value: ±1% gain error and 120 dB CMRR ensure accurate reporting despite high dv/dt switching noise on adjacent power planes. |
Use Scenario: Microamp-level battery current profiling during wireless charging and Bluetooth audio playback in compact earbud cases. IC Role / Device Role / Timing Role: Low-side current sensor on Li-ion cell path; outputs analog signal to integrated MCU for state-of-charge estimation. Use Value: 0.5 nA input bias permits 100-kΩ RC filter without degrading accuracy-rejecting RF interference from Bluetooth antenna. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-sense amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| INA219BIDR | I²C-output digital current sensor; 16-bit ADC; no REF/ENABLE pins; requires host MCU interface | Suitable for systems needing digital telemetry but not analog feedback loops; lacks true bidirectional analog output | Select INA219BIDR only if I²C communication and integrated ADC are required; INA186A5IDCKR remains preferred for analog control paths |
| MAX40086AUT+T | 500 V/V gain; 1.7–5.5 V supply; but no REF pin-unidirectional only; 65 µA IQ vs. 48 µA | Valid for high-side unidirectional sensing where bidirectional capability is unnecessary | Choose MAX40086AUT+T only when REF functionality is unused and layout constraints favor same footprint; INA186A5IDCKR offers superior flexibility |
Compared with INA219BIDR and MAX40086AUT+T, the INA186A5IDCKR uniquely combines analog 500× gain, REF-enabled bidirectionality, 48 µA quiescent current, and SC70-6 size-making it optimal for space- and power-sensitive analog feedback designs requiring ±current resolution.
Availability
INA186A5IDCKR is available at Aetrix Electronics and suitable for smartphone battery management, USB-C PD charger monitoring, and baseband unit (BBU) power rail sensing requiring stable component supply across high-volume production cycles.
Supply support for INA186A5IDCKR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in precision signal conditioning and power management ICs.
The INA186 family was designed specifically for ultra-low-power, high-accuracy current sensing in portable and infrastructure power systems-emphasizing zero-drift performance, wide common-mode operation, and flexible bidirectional capability.
FAQ
What is the maximum common-mode voltage the INA186A5IDCKR can handle?
The INA186A5IDCKR supports a common-mode input voltage range of –0.2 V to +40 V, independent of its 1.7–5.5 V supply voltage. This allows direct high-side sensing on 36-V rails while operating from a low-voltage microcontroller supply. The specification is guaranteed across –40°C to +125°C and applies to both IN+ and IN– pins referenced to GND.
Does the INA186A5IDCKR support bidirectional current sensing?
Yes, the INA186A5IDCKR supports bidirectional current sensing via its dedicated REF pin (Pin 1). Applying a mid-supply voltage (e.g., VS/2) to REF centers the output voltage, enabling positive differential inputs (IN+ > IN–) to produce outputs above REF and negative differentials to produce outputs below REF. This capability is confirmed for the DCK (SC70-6) package in TI's SBOS318B datasheet.
What is the typical quiescent current of the INA186A5IDCKR, and how does the ENABLE pin affect it?
The INA186A5IDCKR draws 48 µA typical quiescent current when enabled (ENABLE = VS). When the ENABLE pin is driven to GND, the device enters shutdown mode and draws only 10 nA typical supply current. This feature is validated in Section 6.5 of the datasheet and enables aggressive power gating in battery-operated systems without external switches.
Can the INA186A5IDCKR be used with a 1.8-V supply?
Yes, the INA186A5IDCKR operates from 1.7 V to 5.5 V, making 1.8-V operation fully supported. At 1.8 V, it maintains rail-to-rail output swing (GND + 1 mV to VS – 40 mV), 27 kHz bandwidth, and specified accuracy-including ±50 µV max offset and ±1% max gain error. Performance data at 1.8 V is provided in Table 6-5 of the SBOS318B datasheet.
What package type is used for the INA186A5IDCKR, and what are its key mechanical dimensions?
The INA186A5IDCKR uses the SC70-6 package (TI package code DCK), with nominal body dimensions of 2.00 mm × 1.25 mm and 0.95-mm height. It features gull-wing leads, 0.65-mm pitch, and JEDEC-standard solder profile compatibility. This package is explicitly listed in Table 3-1 and Figure 5-1 of the SBOS318B datasheet for the INA186A5 variant.
INA186A5IDCKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 6-TSSOP, SC-88, SOT-363
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Sense
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.3V/µs
- Gain Bandwidth Product:
- 27 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 500 pA
- Voltage - Input Offset:
- 3 µV
- Current - Supply:
- 48µA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 1.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-6
INA186A5IDCKR FAQ
1.How can I place an order for INA186A5IDCKR through Aetrix?
Please submit a Request for Quotation (RFQ) for INA186A5IDCKR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for INA186A5IDCKR reliable?
The price and inventory of INA186A5IDCKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for INA186A5IDCKR is usually 5 days.
3.What payment methods are accepted for INA186A5IDCKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for INA186A5IDCKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for INA186A5IDCKR?
INA186A5IDCKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your INA186A5IDCKR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for INA186A5IDCKR?
For technical support, including INA186A5IDCKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your INA186A5IDCKR requirements.
6.How does Aetrix verify that INA186A5IDCKR is sourced from the original manufacturer or authorized distributors?
All INA186A5IDCKR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that INA186A5IDCKR meets industry standards.
7.What is the process for return or replacement of INA186A5IDCKR?
All INA186A5IDCKR units undergo pre-shipment inspection (PSI). If there is an issue with INA186A5IDCKR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The INA186A5IDCKR part is unused and in its original packaging.
Return procedure for INA186A5IDCKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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